EEPORT OE THE SECRETAKY. 87 



as it should have been, except for the slight motion of the moon rela- 

 tive to the sun during the eclipse. However, this defect is not very 

 noticeable, and excellent photographs were obtained with both lenses, 

 but particularly with the one which was exposed 1 minute and 30 

 seconds rather than the other, which was exposed 2f minutes. 



The phenomenon was uncommonly grand, far more so than appears 

 in the photograph. The sun had risen over a snow-capped 

 mountain, about 20,000 feet high. It rose over half eclipsed, with 

 the crescent horns pointing upward from the horizon equally. In 

 20 minutes totality occurred, and there shot out over 20 fine sharp 

 coronal rays, greatest elongated along the equatorial zone, but also 

 visible to great distances from the poles. At the lower limb there 

 was a very large flaming red prominence, which at that time rose 

 to perhaps a quarter of the solar radius, and had a very long side 

 extension^ after the manner of a hook. The same prominence was 

 observed by spectroscopic methods in the United States, at the great 

 observatories, and was one of the finest prominences ever photo- 

 graphed. It is very interesting and fortunate that the early history 

 of this prominence was enriched by the photograph made at La Paz 

 so very early in the morning. 



Taking the whole phenomenon together, the snow-covered moun- 

 tain, the brilliant sky at that great altitude of 14,000 feet, the very 

 numerous and long coronal streamers, and the enormous crimson 

 prominence casting its glow over all, the spectacle was truly glorious, 

 and by far the most impressive of any of the eclipses which have been 

 seen by the writer. It was reported that the Bolivian natives lighted 

 many fires and supplicated the sun to return, after old Inca tradi- 

 tions. 



Visit to Argentina. — Immediately after the eclipse Messrs. Moore 

 and Abbot proceeded to La Quiaca in Argentina for the purpose of 

 having a conference there with the director and forecaster of the 

 Argentine meteorological service. Mr. Clayton, the official fore- 

 caster, submitted for their inspection results he had obtained during 

 several years in the comparison of the weather of Argentina with 

 the variations of solar radiation reported by the Smithsonian observ- 

 ers at Mount Wilson, Calif., and Calama, Chile, and the results ob- 

 tained by using the measurements of Calama for the forecasting of 

 the weather in Argentina. 



Mr, Clayton says : 



For nearly a year numerical and graphical analyses have been made of the 

 solar variations and of the variations of temperature at 20 selected stations well 

 <listributed over Argentina, Chile, and Brazil. These analyses show that each 

 variation in solar radiation has been followed by similar variations of tem- 

 perature in South America, with a few exceptions that may easily have resulted 

 from errors in the measurements of solar radiation. At Buenos Aires the ratio 



